Teresa is buying glitter markers to put in gift bags the table shows the relationship between the number of gift bags and the number of glitter markers she needs to get buy.

A dependent variable is a value that depends on how the other variables are controlled or manipulated.
Meanwhile, an independent variable, is as what its name suggests, is independent and doesn't change based on the value of other variables.
a.) The dependent variable is the number of glitter markers
b.) The independent variable is the number of gift bags
c.) The number of glitter markers Teresa needs to buy depends on the number of gift bags she has. She has to multiply 
d.) The relationship is additive. The more gift bags Teresa has, the more glitter markers she has to buy. 

Dang i wish i could , good luck (i’m bad at math)